Data transmitting apparatus

Abstract

A data transmitting apparatus includes an actually-used-system package that is connected to outside via a plurality of ports and is actually transmitting data, a waiting-system package that is connected to outside via a plurality of ports and is waiting to substitute the actually-used-system package to transmit data when a failure occurs in the actually-used-system package, a switching requesting unit that switches, when a failure occurs in a port of the actually-used-system package, the port of the actually-used-system package to another port and issues to the waiting-system package a switching request indicating that switching is made to a port corresponding to a switching-target port, and a port switching unit that switches the port of the waiting-system package according to the switching request when the waiting-system package receives the switching request issued from the switching requesting unit.

1 . A data transmitting apparatus comprising:
 an actually-used-system package that is connected to outside via a plurality of ports and is actually transmitting data;   a waiting-system package that is connected to outside via a plurality of ports and is waiting to substitute the actually-used-system package to transmit data when a failure occurs in the actually-used-system package;   a switching requesting unit that switches, when a failure occurs in a port of the actually-used-system package, the port of the actually-used-system package to another port and issues to the waiting-system package a switching request indicating that switching is made to a port corresponding to a switching-target port; and   a port switching unit that switches the port of the waiting-system package according to the switching request when the waiting-system package receives the switching request issued from the switching requesting unit.   
   
   
       2 . The data transmitting apparatus according to  claim 1 , wherein
 when switch-enable information that enables switching is not present, the port switching unit suspends switching the port of the waiting-system package.   
   
   
       3 . The data transmitting apparatus according to  claim 1 , further comprising a port-information requesting unit that requests port information about the actually-used-system package when the waiting-system package is inserted, wherein
 the switching requesting unit notifies the waiting-system package of the port information about the actually-used-system package requested by the port-information requesting unit, and   when the waiting-system package receives the port information notified from the switching requesting unit, the port switching unit switches the port of the waiting-system package according to the port information.   
   
   
       4 . The data transmitting apparatus according to  claim 2 , further comprising a port-information requesting unit that requests port information about the actually-used-system package when the waiting-system package is inserted, wherein
 the switching requesting unit notifies the waiting-system package of the port information about the actually-used-system package requested by the port-information requesting unit, and   when the waiting-system package receives the port information notified from the switching requesting unit, the port switching unit switches the port of the waiting-system package according to the port information.